Improved gauge for circular saws



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'I 'Wmwfc WARREN P. MILLER,

or NEW YORK, N. Y.

Letters Patent No. 83,524, dated October 27, 1868.

IMPRoveD GAUGE PoR CIRCULAR saws.

The Schedule referred to in these Letters Patent and'making pan; of the same.

'To all whom it may concern Be it known .that I, WARREN P. MILLER, in the city, county, and. State of NewYork, have invented a new and improved'Mode of Rounding Circular Saws; andI do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings,.and to the letters of reference marked thereon.

The nature of myfinvention consists in the application of a trammel to one of the collars on the mandrel, and is so constructed. as to carry an adjustable indexpoint, by lwhich the relative position of thel points of yall the teeth may be readily determined.'

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation. Y A

I constructv a hollow shaft, oi suitable' length and diameter, and insert inone end Aa plug, whose external diameter is'fully equal' to that of the tube; reduce the external end of the/plug to al thick edge, suitable to traverse in a grooveI formed in the stationary collar on the saw-mandrel; pierce the plug at a proper distance from the end, and insert a round'piece of iron, which bends into the form of a circle having about one hundredand ninety-five degrees; contract the ends inward, and reduce them toform suited to the groove in the collar. On the opposite end of the tube, 'cut a screw that has a 4 taper towards Athe end, and fit a milled nut thereto, having previously dividedthe'endof the tube, witha saw parallel with itsv length, intofour equal parts, so that when the nut y is turned on, it will contract the end of the tube.

Take a round rod of metal, the diameter of which is equal to the hole in the tube, and bend the end atl right angles, and reduce the under side to an vedge suited to the purpose of a gauge-point. Parallel with the gauge-point insert into the shaft, ata'prop'er distance from tile end or bent point, a knob that will freely pass -into the throats of the teeth. Insert the straight end of the rod into the tube. Now pass the forked. end of the tube over the collar on the mandrel,

vthe ends of theforksand plug plying into the groove.

Adjust the gauge-point to anytooth onsthe saw that it .is desired that the other teeth should be made equal to. y

ings.

Letters a a, the saW-mandreL Letters b l), the fast collar, with groove.

Letters c c, loose collar.

Letters al d, nut.

Letters c e, plug, in the end of tube.

Letters f f, the tube or shaft.

Letters g g, rod, carrying the adjustable point.

Letters h It, point of the sliding rod.

Letters i li, knob, to engage in the teeth.

Letters jj, teeth of thesaw.

Letters'lt It, nuts, on the end of the tube Letters Z Z, the saw-plate.

Letters m. m, forks, to clasp the collar.l

Letters n u, groove in th collar.

Letters o o, slits in the end of the tube.

Figure No. l is a side view of a sectibn of a saw, showing the indicator applied to the collar. The dotted lines show itsapplication to the point of a tooth.

Figure No. 2A is a cross-section of the saw, showing the application of the indicator to the collar. and the gauge to the point cfa tooth.

When the gauge isto a tooth, the t1aversing-rod is fastened by turning the nut It. Now, vit will be understood that the clamps m m will traverse on the collar as the vgauge-point is swung around the saw from one tooth to another, thus determining the length of all the teeth.

.The knob t' is for the purpose of engaging in the sockets ofthroats of the teeth to prevent them from falling when the person is engaged in iling or upset- .ting a tooth.

What I claim as my invention, and desire to secure by VLetters Patent, is-

The gauge for rounding circular saws, consisting of gauge-point h, gauge-rod g, nut It, tube f, plug c, ,and

curved arms or forks m m., in connection with grooved collar all constructed, combined, 'and arranged substantia ly as and for the purpose specified.

WARREN P. MILLER.

Witnesses JNO. S. WooDwARD, DAVID M. EDsALL.

Like letters refer to like parts on the several draw- 

